You run this GCD code on the main thread… - Concurrency

ConcurrencyZomato

Nested queue output

You run this GCD code on the main thread. What's the output?

print("A")
DispatchQueue.main.async {
    print("B")
    DispatchQueue.main.async { print("C") }
    DispatchQueue.global().sync {
        print("D")
        DispatchQueue.main.sync { print("E") }
    }
    print("F")
}
print("G")

Pick one

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